1857950172469866496
1,857,950,172,469,866,496 is an even composite number composed of five prime numbers multiplied together.
1857950172469866496 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one thousand, eight hundred seventy-two divisors.
Prime factorization of 1857950172469866496:
212 × 72 × 313 × 372 × 613
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 7 × 31 × 31 × 31 × 37 × 37 × 61 × 61 × 61)See below for interesting mathematical facts about the number 1857950172469866496 from the Numbermatics database.
Names of 1857950172469866496
- Cardinal: 1857950172469866496 can be written as One quintillion, eight hundred fifty-seven quadrillion, nine hundred fifty trillion, one hundred seventy-two billion, four hundred sixty-nine million, eight hundred sixty-six thousand, four hundred ninety-six.
Scientific notation
- Scientific notation: 1.857950172469866496 × 1018
Factors of 1857950172469866496
Divisors of 1857950172469866496
- Number of divisors d(n): 1872
-
Complete list of divisors:
1 2 4 7 8 14 16 28 31 32 37 49 56 61 62 64 74 98 112 122 124 128 148 196 217 224 244 248 256 259 296 392 427 434 448 488 496 512 518 592 784 854 868 896 961 976 992 1024 1036 1147 1184 1369 1519 1568 1708 1736 1792 1813 1891 1922 1952 1984 2048 2072 2257 2294 2368 2738 2989 3038 3136 3416 3472 3584 3626 3721 3782 3844 3904 3968 4096 4144 4514 4588 4736 5476 5978 6076 6272 6727 6832 6944 7168 7252 7442 7564 7688 7808 7936 8029 8288 9028 9176 9472 9583 10952 11956 12152 12544 13237 13454 13664 13888 14336 14504 14884 15128 15376 15616 15799 15872 16058 16576 18056 18352 18944 19166 21904 23912 24304 25088 26047 26474 26908 27328 27776 28672 29008 29768 29791 30256 30752 31232 31598 31744 32116 33152 35557 36112 36704 37888 38332 42439 43808 47089 47824 48608 50176 52094 52948 53816 54656 55552 56203 58016 58621 59536 59582 60512 61504 62464 63196 63488 64232 66304 67081 69967 71114 72224 73408 75776 76664 83509 84878 87616 92659 94178 95648 97216 100352 104188 105896 107632 109312 110593 111104 112406 115351 116032 117242 119072 119164 121024 123008 124928 126392 126976 128464 132608 134162 137677 139934 142228 144448 146816 151552 153328 167018 169756 175232 182329 185318 188356 191296 194432 200704 208376 208537 211792 215264 218624 221186 222208 224812 226981 230702 232064 234484 238144 238328 242048 246016 248899 249856 252784 256928 265216 268324 275354 279868 284456 288896 293632 297073 306656 334036 339512 350464 364658 370636 376712 382592 388864 410347 416752 417074 423584 430528 437248 442372 444416 449624 453962 461404 464128 468968 476288 476656 484096 489769 492032 497798 505568 513856 530432 536648 550708 559736 568912 577792 584563 587264 594146 613312 668072 679024 700928 729316 741272 753424 765184 777728 807457 820694 833504 834148 847168 861056 874496 884744 888832 899248 907924 922808 928256 937936 952576 953312 963739 968192 979538 984064 995596 1011136 1027712 1060864 1073296 1101416 1102267 1119472 1137824 1155584 1169126 1174528 1188292 1226624 1315609 1336144 1358048 1401856 1458632 1459759 1482544 1506848 1530368 1555456 1588867 1614914 1641388 1667008 1668296 1694336 1722112 1742293 1748992 1769488 1798496 1815848 1817251 1845616 1856512 1875872 1905152 1906624 1927478 1936384 1959076 1968128 1991192 2022272 2055424 2079511 2146592 2168977 2202832 2204534 2238944 2275648 2311168 2338252 2349056 2376584 2453248 2588779 2631218 2672288 2716096 2803712 2872429 2917264 2919518 2965088 3013696 3060736 3110912 3177734 3229828 3282776 3334016 3336592 3388672 3428383 3444224 3484586 3538976 3575881 3596992 3631696 3634502 3691232 3713024 3751744 3810304 3813248 3854956 3872768 3918152 3936256 3982384 4044544 4091941 4110848 4159022 4267987 4293184 4337954 4405664 4409068 4477888 4551296 4622336 4676504 4698112 4753168 4906496 5094049 5177558 5262436 5344576 5432192 5607424 5652199 5744858 5834528 5839036 5930176 6027392 6121472 6221824 6355468 6459656 6565552 6668032 6673184 6746173 6777344 6856766 6888448 6969172 7036411 7077952 7151762 7193984 7263392 7269004 7382464 7426048 7503488 7620608 7626496 7709912 7715869 7745536 7836304 7964768 8089088 8183882 8221696 8318044 8398297 8535974 8586368 8675908 8811328 8818136 8955776 9102592 9209263 9244672 9353008 9506336 9812992 10188098 10355116 10524872 10689152 10864384 11122069 11304398 11489716 11669056 11678072 11860352 12054784 12242944 12710936 12720757 12919312 13131104 13336064 13346368 13492346 13554688 13713532 13776896 13938344 14072822 14155904 14303524 14387968 14526784 14538008 14764928 15006976 15182839 15241216 15252992 15419824 15431738 15672608 15929536 16178176 16367764 16443392 16636088 16796594 17071948 17172736 17351816 17622656 17636272 17911552 18121453 18205184 18418526 18706016 19012672 19625984 20376196 20710232 21049744 21378304 21728768 22244138 22608796 22979432 23338112 23356144 23720704 24109568 25031167 25421872 25441514 25838624 26262208 26672128 26692736 26984692 27109376 27427064 27553792 27876688 28145644 28311808 28607048 28775936 29053568 29076016 29529856 29875909 30013952 30365678 30505984 30839648 30863476 31345216 31859072 32356352 32735528 32886784 33272176 33593188 34143896 34345472 34703632 35245312 35272544 35658343 35823104 36242906 36410368 36837052 37412032 38025344 39251968 40752392 40783879 41420464 42099488 42756608 43457536 44488276 45217592 45958864 46676224 46712288 47441408 48219136 49254877 50062334 50843744 50883028 51677248 52524416 53344256 53385472 53969384 54011083 54218752 54854128 55753376 56291288 56623616 57214096 57551872 58107136 58152032 58788079 59059712 59751818 60027904 60731356 61011968 61679296 61726952 62690432 63718144 64464841 64712704 65471056 66544352 67186376 67238287 68287792 68690944 69407264 70490624 70545088 71316686 71646208 72485812 72820736 73674104 74824064 76050688 80252149 81504784 81567758 82840928 84198976 85513216 86915072 88976552 89045299 90435184 91917728 93352448 93424576 94882816 96438272 98509754 100124668 101687488 101766056 103354496 105048832 106279873 106688512 106770944 107938768 108022166 109708256 110852311 111506752 112582576 113247232 114428192 115103744 116214272 116304064 117576158 118119424 119503636 120055808 121462712 122023936 123358592 123453904 125380864 126850171 127436288 128929682 130942112 132307597 133088704 134372752 134476574 136575584 137381888 138814528 140981248 141090176 142633372 143292416 144971624 145641472 147348208 149648128 152101376 157915519 160504298 163009568 163135516 165681856 168397952 171026432 173830144 175218169 177953104 178090598 180870368 183835456 186704896 186849152 189765632 192876544 197019508 200249336 203374976 203532112 206708992 209131363 210097664 212559746 213541888 215877536 216044332 218128741 219416512 221704622 223013504 225165152 226494464 228856384 230207488 232428544 232608128 235152316 236238848 239007272 240111616 242925424 246717184 246907808 249608401 250761728 253700342 254872576 257859364 260347207 261884224 264615194 266177408 268745504 268953148 273151168 274763776 277629056 281962496 282180352 285266744 285487153 286584832 289943248 294696416 299296256 304202752 310736989 315831038 321008596 326019136 326271032 331363712 336795904 342052864 344784139 350436338 355906208 356181196 361740736 367670912 373409792 373698304 379531264 394039016 400498672 406749952 407064224 411516553 413417984 418262726 420195328 425119492 427083776 431755072 432088664 436257482 438833024 443409244 446027008 450330304 452988928 457712768 464857088 465216256 470304632 470668009 472477696 478014544 485850848 493434368 493815616 499216802 501523456 507400684 509745152 515718728 520694414 523768448 529230388 532354816 537491008 537906296 546302336 555258112 561765043 563924992 564360704 570533488 570974306 579886496 589392832 598592512 608405504 621473978 631662076 642017192 652038272 652542064 662727424 673591808 689568278 700872676 711812416 712362392 723481472 735341824 746819584 747396608 775966177 788078032 800997344 813499904 814128448 823033106 826835968 836525452 840390656 850238984 854167552 863510144 864177328 872514964 877666048 886818488 892054016 900660608 915425536 926153179 929714176 930432512 940609264 941336018 956029088 971701696 986868736 987631232 998433604 1003046912 1014801368 1019490304 1031437456 1041388828 1047536896 1058460776 1064709632 1074982016 1075812592 1092604672 1105408633 1110516224 1123530086 1128721408 1141066976 1141948612 1159772992 1178785664 1197185024 1216811008 1242947956 1263324152 1284034384 1304076544 1305084128 1325454848 1347183616 1379136556 1401745352 1423624832 1424724784 1446962944 1470683648 1494793216 1526901187 1551932354 1576156064 1601994688 1626999808 1628256896 1646066212 1653671936 1673050904 1680781312 1700477968 1727020288 1728354656 1745029928 1755332096 1773636976 1784108032 1801321216 1822430449 1830851072 1852306358 1860865024 1881218528 1882672036 1912058176 1943403392 1973737472 1975262464 1996867208 1998410071 2006093824 2029602736 2062874912 2082777656 2095073792 2116921552 2129419264 2149964032 2151625184 2175158923 2185209344 2210817266 2221032448 2247060172 2257442816 2282133952 2283897224 2319545984 2357571328 2394370048 2485895912 2487816619 2526648304 2568068768 2608153088 2610168256 2650909696 2694367232 2758273112 2803490704 2847249664 2849449568 2893925888 2941367296 2989586432 3053802374 3103864708 3152312128 3203989376 3253999616 3256513792 3292132424 3294676063 3307343872 3346101808 3400955936 3454040576 3456709312 3490059856 3510664192 3547273952 3568216064 3602642432 3644860898 3661702144 3704612716 3721730048 3762437056 3765344072 3824116352 3886806784 3932355301 3947474944 3950524928 3993734416 3996820142 4059205472 4101535507 4125749824 4165555312 4190147584 4233843104 4258838528 4299928064 4303250368 4350317846 4370418688 4421634532 4442064896 4494120344 4514885632 4564267904 4567794448 4639091968 4715142656 4895381089 4971791824 4975633238 5053296608 5136137536 5216306176 5220336512 5301819392 5388734464 5431763239 5516546224 5606981408 5694499328 5698899136 5787851776 5882734592 5979172864 6107604748 6207729416 6304624256 6407978752 6483072253 6507999232 6513027584 6584264848 6589352126 6692203616 6761990971 6801911872 6908081152 6913418624 6980119712 7021328384 7094547904 7136432128 7205284864 7289721796 7323404288 7409225432 7443460096 7524874112 7530688144 7648232704 7737860431 7773613568 7864710602 7901049856 7987468832 7993640284 8070763417 8118410944 8203071014 8251499648 8331110624 8380295168 8467686208 8517677056 8599856128 8606500736 8700635692 8740837376 8843269064 8884129792 8988240688 9128535808 9135588896 9278183936 9430285312 9632846659 9790762178 9943583648 9951266476 10106593216 10272275072 10432612352 10440673024 10603638784 10688308309 10863526478 11033092448 11213962816 11388998656 11397798272 11575703552 11765469184 12215209496 12415458832 12609248512 12757013143 12815957504 12966144506 13026055168 13168529696 13178704252 13384407232 13523981942 13603823744 13816162304 13826837248 13960239424 14042656768 14189095808 14410569728 14579443592 14646808576 14818450864 15049748224 15061376288 15226112461 15296465408 15475720862 15547227136 15729421204 15802099712 15974937664 15987280568 16141526834 16236821888 16406142028 16502999296 16662221248 16760590336 16935372416 17199712256 17213001472 17401271384 17414716333 17481674752 17686538128 17976481376 18257071616 18271177792 18556367872 18860570624 19265693318 19581524356 19887167296 19902532952 20213186432 20544550144 20865224704 20881346048 21376616618 21727052956 22066184896 22427925632 22777997312 22795596544 23151407104 24430418992 24830917664 25218497024 25514026286 25631915008 25932289012 26052110336 26337059392 26357408504 26768814464 27047963884 27207647488 27632324608 27653674496 27920478848 28378191616 28710748549 28821139456 29158887184 29636901728 30099496448 30122752576 30452224922 30592930816 30951441724 31094454272 31458842408 31604199424 31949875328 31974561136 32283053668 32473643776 32812284056 33005998592 33324442496 33870744832 34267667623 34399424512 34426002944 34802542768 34829432666 35373076256 35952962752 36514143232 36542355584 37112735744 37721141248 38531386636 39163048712 39774334592 39805065904 40426372864 41089100288 41762692096 42753233236 43454105912 44132369792 44855851264 45555994624 45591193088 47333936797 48860837984 49661835328 50436994048 51028052572 51263830016 51864578024 52104220672 52674118784 52714817008 53537628928 54095927768 54415294976 55307348992 55840957696 56495343919 56756383232 57421497098 58317774368 59273803456 60198992896 60245505152 60904449844 61185861632 61902883448 62188908544 62917684816 63899750656 63949122272 64566107336 64947287552 65624568112 66011997184 66648884992 67429926613 67741489664 68535335246 68852005888 69605085536 69658865332 70746152512 71905925504 73028286464 73084711168 74225471488 77062773272 78326097424 79548669184 79610131808 80852745728 82178200576 83525384192 85506466472 86908211824 88264739584 89711702528 91182386176 94667873594 97721675968 99323670656 100873988096 102056105144 102527660032 103729156048 105348237568 105429634016 107075257856 108191855536 108830589952 110614697984 111681915392 112990687838 113512766464 114842994196 116635548736 118547606912 120397985792 120491010304 121808899688 121903014331 122371723264 123805766896 125835369632 127799501312 127898244544 129132214672 129894575104 131249136224 132023994368 133297769984 134859853226 135482979328 137070670492 137704011776 139210171072 139317730664 141492305024 143811851008 146056572928 146169422336 151756813759 154125546544 156652194848 159097338368 159220263616 161705491456 164356401152 167050768384 171012932944 173816423648 176529479168 179423405056 182364772352 189335747188 195443351936 198647341312 200975239843 201747976192 204112210288 207458312096 210696475136 210859268032 214150515712 216383711072 217661179904 221229395968 223363830784 225981375676 227025532928 229685988392 233271097472 237095213824 239873673361 240795971584 240982020608 243617799376 243806028662 247611533792 250193665927 251670739264 255599002624 255796489088 258264429344 259789150208 262498272448 264047988736 266595539968 269719706452 270965958656 274141340984 275408023552 278420342144 278635461328 282984610048 287623702016 292338844672 298618246429 303513627518 308251093088 313304389696 318194676736 318440527232 323410982912 328712802304 331337557579 342025865888 347632847296 353058958336 358846810112 364729544704 378671494376 390886703872 395467407433 397294682624 401950479686 408224420576 414916624192 421392950272 421718536064 428301031424 432767422144 435322359808 446727661568 451962751352 454051065856 459371976784 466542194944 472009486291 474190427648 479747346722 481964041216 487235598752 487612057324 495223067584 500387331854 503341478528 511198005248 511592978176 516528858688 519578300416 524996544896 533191079936 539439412904 541931917312 548282681968 556840684288 557270922656 565969220096 575247404032 584677689344 597236492858 607027255036 616502186176 626608779392 636389353472 636881054464 646821965824 662675115158 684051731776 695265694592 706117916672 717693620224 757342988752 781773407744 790934814866 794589365248 803900959372 816448841152 829833248384 842785900544 843437072128 856602062848 865534844288 893455323136 903925502704 918743953568 933084389888 944018972582 948380855296 959494693444 963928082432 974471197504 975224114648 990446135168 1000774663708 1006682957056 1022396010496 1023185956352 1033057717376 1049993089792 1062297696313 1066382159872 1078878825808 1096565363936 1113681368576 1114541845312 1131938440192 1150494808064 1169355378688 1194472985716 1214054510072 1233004372352 1253217558784 1272778706944 1273762108928 1325350230316 1368103463552 1390531389184 1412235833344 1514685977504 1563546815488 1581869629732 1589178730496 1607801918744 1632897682304 1659666496768 1685571801088 1686874144256 1731069688576 1751355661489 1807851005408 1837487907136 1866168779776 1888037945164 1896761710592 1918989386888 1927856164864 1948942395008 1950448229296 1980892270336 2001549327416 2013365914112 2046371912704 2066115434752 2090327725003 2099986179584 2124595392626 2157757651616 2193130727872 2227362737152 2229083690624 2263876880384 2300989616128 2388945971432 2428109020144 2466008744704 2506435117568 2547524217856 2650700460632 2736206927104 2781062778368 3029371955008 3127093630976 3163739259464 3178357460992 3215603837488 3265795364608 3319332993536 3373748288512 3462139377152 3502711322978 3615702010816 3674975814272 3732337559552 3776075890328 3793523421184 3837978773776 3897884790016 3900896458592 3961784540672 4003098654832 4026731828224 4092743825408 4132230869504 4180655450006 4199972359168 4249190785252 4315515303232 4386261455744 4454725474304 4458167381248 4527753760768 4777891942864 4856218040288 4932017489408 5012870235136 5095048435712 5301400921264 5472413854208 5562125556736 6058743910016 6254187261952 6327478518928 6431207674976 6531590729216 6638665987072 6747496577024 6924278754304 7005422645956 7231404021632 7349951628544 7436083874191 7464675119104 7552151780656 7675957547552 7795769580032 7801792917184 7923569081344 8006197309664 8053463656448 8185487650816 8264461739008 8361310900012 8399944718336 8498381570504 8631030606464 8772522911488 8909450948608 8916334762496 9257165639299 9555783885728 9712436080576 9864034978816 10025740470272 10190096871424 10602801842528 10944827708416 11124251113472 12117487820032 12259489630423 12654957037856 12862415349952 13063181458432 13277331974144 13494993154048 13848557508608 14010845291912 14462808043264 14632294075021 14699903257088 14872167748382 15104303561312 15351915095104 15591539160064 15603585834368 15847138162688 16012394619328 16106927312896 16528923478016 16722621800024 16799889436672 16996763141008 17262061212928 17545045822976 17832669524992 18514331278598 19111567771456 19424872161152 19728069957632 20051480940544 21205603685056 21889655416832 22248502226944 24234975640064 24518979260846 25309914075712 25724830699904 26126362916864 26554663948288 27697115017216 28021690583824 28925616086528 29264588150042 29399806514176 29744335496764 30208607122624 30703830190208 31183078320128 31207171668736 31694276325376 32024789238656 33057846956032 33445243600048 33993526282016 34524122425856 35090091645952 35665339049984 37028662557196 38223135542912 38849744322304 39456139915264 42411207370112 43779310833664 48469951280128 49037958521692 50619828151424 51449661399808 52252725833728 56043381167648 57851232173056 58529176300084 58799613028352 59488670993528 60417214245248 61407660380416 62366156640256 62414343337472 64049578477312 64800159475093 66890487200096 67987052564032 69048244851712 70180183291904 71330678099968 74057325114392 76446271085824 77699488644608 84822414740224 96939902560256 98075917043384 101239656302848 102899322799616 112086762335296 115702464346112 117058352600168 117599226056704 118977341987056 120834428490496 122815320760832 124828686674944 128099156954624 129600318950186 133780974400192 135974105128064 138096489703424 140360366583808 148114650228784 152892542171648 155398977289216 169644829480448 193879805120512 196151834086768 202479312605696 205798645599232 224173524670592 231404928692224 234116705200336 237954683974112 241668856980992 245630641521664 249657373349888 256198313909248 259200637900372 267561948800384 271948210256128 276192979406848 296229300457568 305785084343296 310797954578432 339289658960896 392303668173536 404958625211392 411597291198464 448347049341184 453601116325651 468233410400672 475909367948224 483337713961984 491261283043328 499314746699776 512396627818496 518401275800744 535123897600768 543896420512256 592458600915136 611570168686592 621595909156864 678579317921792 784607336347072 809917250422784 823194582396928 896694098682368 907202232651302 936466820801344 951818735896448 966675427923968 982522566086656 1024793255636992 1036802551601488 1070247795201536 1087792841024512 1184917201830272 1223140337373184 1357158635843584 1569214672694144 1619834500845568 1793388197364736 1814404465302604 1872933641602688 1903637471792896 1933350855847936 2073605103202976 2140495590403072 2175585682049024 2369834403660544 3138429345388288 3586776394729472 3628808930605208 3745867283205376 3807274943585792 4147210206405952 4280991180806144 4351171364098048 4739668807321088 6276858690776576 7173552789458944 7257617861210416 7491734566410752 7614549887171584 8294420412811904 8561982361612288 9479337614642176 12553717381553152 14515235722420832 14983469132821504 15229099774343168 16588840825623808 18958675229284352 25107434763106304 29030471444841664 29966938265643008 30458199548686336 33177681651247616 37917350458568704 50214869526212608 58060942889683328 59933876531286016 66355363302495232 116121885779366656 132710726604990464 232243771558733312 265421453209980928 464487543117466624 928975086234933248 1857950172469866496
- Sum of all divisors σ(n): 4666582925658710784
- Sum of proper divisors (its aliquot sum) s(n): 2808632753188844288
- 1857950172469866496 is an abundant number, because the sum of its proper divisors (2808632753188844288) is greater than itself. Its abundance is 950682580718977792
Bases of 1857950172469866496
- Binary: 11001110010001100001111010110100010000111000100110000000000002
- Hexadecimal: 0x19C8C3D688713000
- Base-36: E464DA3WO934
Squares and roots of 1857950172469866496
- 1857950172469866496 squared (18579501724698664962) is 3451978843380806658341249148063318016
- 1857950172469866496 cubed (18579501724698664963) is 6413604687421699995769341507547367084181395174311591936
-
The
square root of 1857950172469866496 is 1363066459.3004504327 -
The
cube root of 1857950172469866496 is 1229357.0068833719
Scales and comparisons
How big is 1857950172469866496?- 1,857,950,172,469,866,496 seconds is equal to 59,077,068,467 years, 16 weeks, 4 days, 22 hours, 28 minutes, 16 seconds.
-
To count from 1 to 1,857,950,172,469,866,496 would take you about two hundred six billion, seven hundred sixty-nine million, seven hundred thirty-nine thousand, six hundred thirty-five years!
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 1857950172469866496 cubic inches would be around 102446.4 feet tall.
Recreational maths with 1857950172469866496
- 1857950172469866496 backwards is 6946689642710597581
- The number of decimal digits it has is: 19
- The sum of 1857950172469866496's digits is 103
- More coming soon!
Link to this page
HTML: To link to this page, just copy and paste the link below into your blog, web page or email.
BBCODE: To link to this page in a forum post or comment box, just copy and paste the link code below:
Cite this page
MLA style:
"Number 1857950172469866496 - Facts about the integer". Numbermatics.com. 2024. Web. 4 June 2024.
APA style:
Numbermatics. (2024). Number 1857950172469866496 - Facts about the integer. Retrieved 4 June 2024, from https://numbermatics.com/n/1857950172469866496/
Chicago style:
Numbermatics. 2024. "Number 1857950172469866496 - Facts about the integer". https://numbermatics.com/n/1857950172469866496/
The information we have on file for 1857950172469866496 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
Keywords: Divisors of 1857950172469866496, math, Factors of 1857950172469866496, curriculum, school, college, exams, university, Prime factorization of 1857950172469866496, STEM, science, technology, engineering, physics, economics, calculator, one quintillion, eight hundred fifty-seven quadrillion, nine hundred fifty trillion, one hundred seventy-two billion, four hundred sixty-nine million, eight hundred sixty-six thousand, four hundred ninety-six.